Multiplayer - Add realtime collaboration to your product experience

Built-in collaboration for text editors.

Bring the collaboration experience of Google Docs or Notion to your text editor. All in just a few lines of code, with no infrastructure to maintain.

Integrate with your favorite text editor.

Realtime collaboration

See edits live with synced content, cursors, and user presence.

AI toolbar

Add AI actions like rewrite or generate text in the editor.

Annotation comments

Add contextual comments directly to blocks of content.

Inline mentions

Mention anyone with @ to notify them in realtime.

Multiplayer undo/redo

Each user gets their own undo stack—just like in Google Docs.

Version history

Restore previous states or review changes over time.

Offline support

Keep editing offline. Changes sync when you reconnect.

Fully managed backend for sync engines.

Use Yjs or Liveblocks Storage to sync data in realtime. We handle the backend infrastructure so you can focus on your product.

Build custom multiplayer experiences.

Persisted data storage

Data is saved and synced—no need to manage your own backend.

Realtime rooms

Realtime rooms live in edge regions close to your users.

Production-ready SDKs

Integrates easily with your existing frontend or state management stack.

Conflict resolution

Handle concurrent edits automatically using CRDTs under the hood.

Built to scale

Sync millions of updates across users, with infrastructure that scales as you grow.

A developer experience you’ll love.

Our APIs make it easy to integrate realtime presence indicators into any app without compromising on flexibility and customizability.

Read the docs Browse examples

import { Cursors } from "@liveblocks/react-ui";
function App() {  return (    <Cursors>      {children}    </Cursors>  );}

More than just Multiplayer.

Engage users, fuel creativity, and drive growth with just a few lines of code. Ship collaborative features into your product in days, not months.

Comments
Add contextual comments directly inside your product.
Learn more](/content/comments/index.html)

AI Copilots
AI assistants that can take actions on behalf of the user.
Learn more](/content/ai-copilots/index.html)

Notifications
Embed an inbox in your app and keep users coming back.
Learn more](/content/notifications/index.html)